I recently installed an MSD boost controller on my race car. The engine is a 4 cylinder turbo making approx 575hp. I have went to my local track to try and get some data and get the PID values correct. I am real new to this PID stuff and was hoping someone could take a look at my ACQ file and give me some pointers. PWM is swinging from one end to the other at 40 and 159 and boost is all over the place.

The GMR pick up works like a timing light. It senses the pulse in the wire and generates a tach signal from that pulse. The 8913 is actually spliced into the coil wiring to generate a tach signal. Sometimes the insulation on the wire is too thick and impedes the GMR pick up from sensing the pulse on the wire. Try shaving some of the insulation down (Without exposing the conductor) to see if the GMR starts to generate a tach signal. The PWM is full open because the boost controller is unable to control the actual boost vs the target pressure. This could be due to no RPM signal or too small of a wastegate and the turbo is spiking through the wastegate. My first suggestion is to get the RPM signal fixed ASAP. Then possibly consider mounting a racepak 75psig sensor on the gate and monitoring/controlling the pressure on the gate. I'd use the EFI to data log boost pressure. It will be a lot more consistent and easier to troubleshoot.